Both #defence-systems and #prophages contributed to phage resistance.
For one bacterial phylogroup, strains with more defence systems were infected by fewer phages.
Prophages didn’t strictly block infection but seemed to modulate phage efficacy in complex ways.

Both bacterial phylogeny and phage taxonomy influenced the structure of the phage–bacteria interaction network, alongside the observed nestedness.

We tested 23 #phages from diseased #apricot trees against 44 #𝑃𝑠𝑒𝑢𝑑𝑜𝑚𝑜𝑛𝑎𝑠 𝑠𝑦𝑟𝑖𝑛𝑔𝑎𝑒 strains from diseased plants, healthy plants, and nearby habitats. Instead of local adaptation, we found a strongly nested network, reflecting the broad ecological range of 𝑃. 𝑠𝑦𝑟𝑖𝑛𝑔𝑎𝑒.